含高比例分布式光伏配电网分区电压调差系数优化方法

莫静山; 宋娜; 范凯民

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电力建设 ›› 2025

含高比例分布式光伏配电网分区电压调差系数优化方法

莫静山, 宋娜, 范凯民

作者信息 +

Including the Optimization Method of High-proportion Distributed Photovoltaic Distribution Grid Subdivision Voltage Adjustment Coefficient

MO Jingshan, SONG Na, FAN Kaimin

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文章历史 +

摘要

【目的】为了提高光伏的无功响应能力,限制电压越限问题,提出考虑大量分布式光伏并网下的基于分区的无功电压调差系数优化方法。【方法】以限制多种场景下各节点电压波动为目标,提出基于分区的含无功-电压调差系数节点的优化模型,利用“区间内部强耦合,分区之间弱耦合”的特点简化控制模型,实现光伏根据外界电压波动自主调节输出无功、充分利用无功剩余。【结果】以IEEE33节点标准算例进行仿真的结果表明,基于分区的无功电压调差系数优化方法可以有效地利用无功进行节点电压调节,更利于满足无功优化精准性与快速性的要求。【结论】本文所提方法可以有效改善多种不同场景下配电网节点电压质量,充分发挥了光伏无功剩余。

Abstract

[Objective] In order to improve the reactive response ability of photovoltaics and limit the problem of voltage over-limit, a subdivision-based reactive voltage adjustment coefficient optimisation method is proposed to consider a large number of distributed photovoltaics connected to the grid. [Methods] With the goal of limiting the voltage fluctuations of each node under a variety of scenarios, an optimisation model of nodes with reactive-voltage differential coefficient based on partitions is proposed, and the control model is simplified by using the characteristics of "strong coupling within the interval and weak coupling between partitions" to realise that photovoltaics can independently adjust the output of reactive according to external voltage fluctuations and make full use of the residual reactive. [Results] The simulation results of the IEEE33 node standard example show that the partition-based reactive voltage adjustment coefficient optimisation method can effectively use reactive to regulate node voltage, which is more conducive to meeting the requirements of accuracy and speed of reactive optimisation. [Conclusions] The method proposed in this article can effectively improve the voltage quality of the distribution grid nodes under a variety of different scenarios, giving full play to the photovoltaic reactive residual.

导出引用

莫静山, 宋娜, 范凯民. 含高比例分布式光伏配电网分区电压调差系数优化方法[J]. 电力建设. 2025

MO Jingshan, SONG Na, FAN Kaimin. Including the Optimization Method of High-proportion Distributed Photovoltaic Distribution Grid Subdivision Voltage Adjustment Coefficient[J]. Electric Power Construction. 2025

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